Zanussi DS 20 TCR/A Instructions For The Use And Care page 9

Water supply connections
The dishwasher must be plumbed into a
cold water supply and it is preferable for
it to be permanently plumbed in.
The water pressure must be within the
limits given in the technical data, as it
will not function correctly if the pressure
is outside these specifications.
Your local Water Authority will advise
you on the average mains pressure in
your area. Where the water is supplied
via a cold water storage cistern, you can
work out the pressure yourself by
measuring the vertical distance (or
«head») between the machine's inlet hose
and the outlet from the cold water
storage cistern, allowing roughly 1 psi for
every 2 feet
As to the making of the connection itself,
the coupling nut fitted to the machine's
supply hose is designed to screw onto
either a 3/4 inch gas thread spout, or to a
purpose made quick-coupling tap such as
the Press-Block. To make this easier, the
hose itself may be turned to the right or
left. In either case, be sure to incorporate
the strainer supplied with the machine
onto the joint (fig. 5).
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